Stop the looping in some layers

Hey! I'm back with more questions! ;-)

I have a movie clip called myClip.
In myClip I have several layers. I want to stop some layers from looping but I want others to keep on looping. Can that be done? how?

If it is not possible, is there any way to trick it? A better explanation:  I have a main animation plus some minor animations going on inside of myClip, and at the end of the main animation I need it to stop but I need some minor animations to keep on moving ..

I'm using AS2

Thanks!